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im sorry im such an idiot, can someone please explain:

how the stj acts like a mitered hinge
the spiral of archimedes and stj

ankle and OMJA midtarsal



thanks,

kona

 

Re: spiral of archimedes?

John Manter first modeled the subtalar joint facets as a "spiral of Achimedes" (Manter JT: Movements of the subtalar and transverse tarsal joints. Anat Rec, 80:397-410, 1941). See his attached paper.

Hope this helps.